Idea Summary
To be able to programatically resize a modal dialog which both resizes the dialog and the regions within that dialog.

Use Case
Often you might open a dialog with a small size as it only has a few items on it, and then dependant on the values entered you then might want to display more items or regions. Here it would be helpful to be able to resize the dialog ensuring that items/regions within the dialog are also resized to ensure they make the most of the availble space.

Preferred Solution (Optional)
Have a dialog widget, that you can address or refer to the dialog using its ID and then apply a function to this to resize.